The English actor is set to star opposite PLL alums Sasha Pieterse and Janel Parrish, who will reprise their roles in the offshoot.

The Perfectionists is based on the Sara Shepard book and is being adapted by Pretty Little Liars showrunner I. Marlene King, marking her latest take on the author's work.

Here's how Freeform describes The Perfectionists: "Everything about the town of Beacon Heights seems perfect, from their top-tier college to their overachieving residents. But nothing in Beacon Heights is as it appears to be. The stress of needing to be perfect leads to the town’s first murder. Behind every Perfectionist is a secret, a lie and a needed alibi."

The English actor will play Jeremy, a brilliant young scientist who works at Beacon Heights’ prestigious Hotchkiss Technologies, and is hiding a shocking secret. While currently a pilot, The Perfectionists is fully expected to go to series, as PLL was Freeform's flagship brand.

The Perfectionists is the biggest role to date for King, who will appear in Neil Jordan's upcoming indie, The Widow. He is repped by ICM, the U.K.'s BWH and Alan Siegel Entertainment.